Hieromonk Nikon of Karoulia (also known as Nikon Karulskiy, Russian: Никон Карульский; born Nikolai Nikolaevich (von) Strandtman, Russian: Николай Николаевич Штрандман; also known as Nikon N. Strandtman; 4 September 1875, Grodno, Belarus – 20 September 1963, Mount Athos, Greece) was a Russian military officer and Orthodox monk. During his later years, he was known as a hesychast hermit and starets in Karoulia, Mount Athos.